[CIFS] NTLMv2 support part 4

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 09f94617e53..8bcb1da3270 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -305,8 +305,44 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
 }
 #endif /* CIFS_WEAK_PW_HASH */
 
+static int calc_ntlmv2_hash(const struct cifsSesInfo *ses, 
+                            char * ntv2_hash)
+{
+        int rc = 0;
+        int len;
+        char nt_hash[16];
+        struct HMACMD5Context * pctxt;
+
+        pctxt = kmalloc(sizeof(struct HMACMD5Context), GFP_KERNEL);
+
+        if(pctxt == NULL)
+                return -ENOMEM;
+
+        /* calculate md4 hash of password */
+        E_md4hash(ses->password, nt_hash);
+
+        /* convERT Domainname to unicode and uppercase */
+        hmac_md5_init_limK_to_64(nt_hash, 16, pctxt);
+
+        /* convert ses->userName to unicode and uppercase */
+
+        /* len = ... */  /* BB FIXME BB */
+
+        /* hmac_md5_update(user, len, pctxt); */
+
+        /* convert ses->domainName to unicode and uppercase */
+
+        /* len = ... */  /* BB FIXME BB */
+        /* hmac_md5_update(domain, len, pctxt); */
+
+        hmac_md5_final(ntv2_hash, pctxt);
+
+        return rc;
+}
+
 void setup_ntlmv2_rsp(const struct cifsSesInfo * ses, char * resp_buf)
 {
+        int rc;
         struct ntlmv2_resp * buf = (struct ntlmv2_resp *)resp_buf;
 
         buf->blob_signature = cpu_to_le32(0x00000101);
@@ -316,7 +352,11 @@ void setup_ntlmv2_rsp(const struct cifsSesInfo * ses, char * resp_buf)
         buf->reserved2 = 0;
         buf->names[0].type = 0;
         buf->names[0].length = 0;
+
         /* calculate buf->ntlmv2_hash */
+        rc = calc_ntlmv2_hash(ses,buf->ntlmv2_hash);
+        if(rc)
+                cERROR(1,("could not get v2 hash rc %d",rc));
 }
 
 void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_response)